I have an 04 f150 4x4 XL, not heritage. I am going to put a 2" or 2.5" leveling kit and I am going to get some 17X10 or 18X10 after market rims, has the crapy 17" steel rims as of right now. I am wanting a 285 or 305 but I do not want to rub so what is my max size? 33X12.50 going to rub or what about a 32X11.50? Any help will be greatly appreciated I am new to the new body style F150's.

since you are going aftermarket rims- go 33x12.5" or if you are wanting to go larger you CAN fit 35x12.5's but you will have to find a rim with backspacing pretty close to the stock 5.5" backspace measurment...

I'd go with 33's. You will probably still have rubbing if you go with a 10 inch wide wheel.